基于绝对潮流介数和分布因子相关度的关键线路辨识方法

发布时间：2018-01-26 13:12

本文关键词： 关键线路辨识绝对潮流介数分布因子相关度功率分布因子动态关键线路静态关键线路　出处：《高电压技术》2017年01期 　论文类型：期刊论文

【摘要】：为提高电力系统关键线路辨识的准确度和辨识速度,基于电网功率分布因子、计及与发电机和负荷直连线路的重要度因子,定义了绝对潮流介数指标来进行静态关键线路辨识,并提出了分布因子相关度指标进行动态关键线路辨识。IEEE 39节点算例表明,所提出的绝对潮流介数和分布因子相关度指标无需计算潮流,同时基于绝对潮流介数辨识结果对系统进行连续攻击会使得系统最优切负荷量更大,可以更全面地找出系统的关键线路,提高关键线路辨识准确度;分布因子相关度指标提高了关键线路辨识速度,对故障后系统的前2条关键线路的辨识结果较好;结合2者可大大提高关键线路辨识效率。
[Abstract]:In order to improve the accuracy and speed of power system key line identification, based on the power distribution factor, the importance factor of generator and load direct line is taken into account. The absolute power flow index is defined for static critical line identification, and the distribution factor correlation index is proposed for dynamic key line identification. IEEE 39 bus example is presented. The proposed correlation index of absolute power flow and distribution factor does not need to calculate power flow, and based on the identification results of absolute power flow, a continuous attack on the system will make the optimal load shedding of the system larger. The key circuit of the system can be found out more comprehensively and the identification accuracy of the key circuit can be improved. The distribution factor correlation index improves the identification speed of the key lines, and the identification results of the first two key lines of the system after failure are better. The efficiency of key line identification can be greatly improved by combining 2.
【作者单位】：太原理工大学电力系统运行与控制山西省重点实验室;国网新疆电力公司乌鲁木齐供电公司;
【基金】：山西省煤基重点科技攻关项目(MD2014 06) 高等学校博士学科点专项科研基金(20121402120007)~~
【分类号】：TM75
【正文快照】： 0引言1世界范围内的大停电事故频发,造成巨大的经济损失和社会影响,引发了各国的高度重视[1-3]。经研究发现,引发电网连锁故障的源头主要是输变设——备[4]。输电设备是系统功率传输的主要设备,且输电设备故障可能会引起大范围的潮流波动,造成其余线路的潮流、电压越限,进而引

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